A wire of length $50\, cm$ and cross sectional area of $1$ sq. mm is extended by $1\, mm.$ The required work will be $(Y = 2 \times {10^{10}}\,N{m^{ - 2}})$
A wire of length $50\, cm$ and cross sectional area of $1$ sq. mm is extended by $1\, mm.$ The required work will be $(Y = 2 \times {10^{10}}\,N{m^{ - 2}})$
- A
$6 \times {10^{ - 2}}\,J$
- B
$4 \times {10^{ - 2}}\,J$
- C
$2 \times {10^{ - 2}}\,J$
- D
$1 \times {10^{ - 2}}\,J$
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